Window jamb, casing, and blind stop construction



S. MADSEN oct. 1`1, 1932.

WINDOW JAMB, GASING, AND BLIND STOP CONSTRUCTION Filed April 24. 1950 2 Sheets-Sheet l Oct. l1, 1932. s. MADsx-:N 1,881,779

I WINDOW JAMB, CASING, AND BLND STOP CONSTRUCTION Filed lApril 24, 1930 2 Sheets-Sheet 2 @M2/w 5MM 9x9 Patented Oct. 11, 1932 UNITED STATES PATENT@y OFFICE l SEEN' MADSEN, OF'CLINTON, IOWA, ASSIGNOR TO CURTIS COMPANIESVINCORPORATED,

. OF CLINTON, IOWA, A CORPORATION OF IOWA Application led'iAprilM, 1930. .Serial No. 446,940.

' The: object of'this invention is to provide a'win'dow j amb, casing and -blind stop construction. .that is simple, durable and` comparatively easyv to manufacture.

v More particularly, it is my object to provide a construction for window frames in la tongue and groove joint, and the blind stop is'connected to ythe jamb by a dove-tailed tongue and groove connection.

Still a further object is to provide means ywhereby an effective Weather tight joint is provided between the head and side casings and thehead and side jambs Aand yet a tongue and groove connection can be provided between the `side casings and head casing so that the outer surface of the casings can be accurately aligned with each other.

Another object isto provide a dove-tailed tongue and groove connection for the blind stop so that it may be locked in position by the casings when they are applied to the jambs more'rigidly than is possible when attaching the blind stop by either screws or nails alone. This construction makes removal of the blind stop very diicult for burglars so that the window sashes cannot be removed after the blind stops are removed for gaining access to the building.

A further object is toV provide a tongue and groove joint between the side casings and side j ambs, whereby a blind stop having a dove-tailed connection with the' side jamb is maderigid andpermanent due to the locking of the dove-tailed tongue of the blind stop.

Still a further object is to improve the yweather tight qualities, appearance .and ease of aligning parts of a window frame and otherwise improve the frame as hereinafter set forth. y

With these and other objectsy in view my invention consists in the construction, `arrangement andcombination of the various partsof my device, whereby the objects contemplated are attained, as hereinafter more .fully set forth, pointed out in my claims, and illustrated in the accompanying drawings, in which Figure 1 is an outside elevation of a window. frame embodying my invention.

Figure 2 is a vertical, sectional view on an enlarged scale and taken on the line 2-2 of Figure 1.

Figure 3 is a horizontal, sectional view on an enlargedY scale taken on the line 3 3 of Figure 1.

Figure 4 is a sepa-rated perspective view of portions of the head jamb, side jamb, head casing, and side casing.

Figure 5 is an inside separated perspective view of the upper end of the side casing and one end of the head casing as viewed from below. f

Figure 6 is a perspective view of the upper end of the side casing.

Figure 7 is a perspective view ofthe upper upper part of Figure 2 showing a modified form of construction. V

On the accompanying drawings I have used the reference character A to indicate generally a window frame. The window frame A includes a sill 10, side jambs 12 and a head jamb 14. It further includes side casings 16 and a head casing 18.

The side jambs 12 are provided at their outer edges with tongues 20. The side casings 16 are provided in their inner faces with grooves 22 to coact with the tongues 2O as .best shown in Figure 3 of the drawings.

Thus, a weather tight joint is provided between the side jambs and side casings which. accurately aligns all of these parts relative to each other.

In providing this tongue and groove joint between the jambs and casings of the window frame A, it would be desirable to run the tongue and groove joint along both sidel rcasings and also across the head casing- It is also desirable to have a tongue and groove joint between thetop ends of the side casing and the head casing.

Unfortunately, a window frame cannot be conveniently assembled when so constructed.V Therefore, it l1sV necessary to substitute some other form of weather resisting joint Veither between the head jamb and head casingor between" the side'fca'sin'g and head-icasing.

Sincefit Vis more important 'to "retain ithe tongue and groove joint between thesideand head casings, Ifhavechesen a rabbetted joint for use between 'the head amb andv For aligning' the 'head casing 18 vwithtlie upper ends of the side casings 16, I provide a groove 24 in the lower edge'of thehead casing 18 and tongues 26 formed on the upperV ends of the'sidecasings 16to coact with-the v 'groove 24.- Since I'fhave retained atofngue` and' grooveV connection between thenside jambs and head jamb, and it is necessary to provide another type o fjoint between the Vhead jamb and head casing,I project the Vouter Vedge of the vhead jamb 14 Vontwardly Vuntil it is substantially flush with the outer et c i v,casing 18 so as to provide the rabbetted joint ,edges ofthe tongues 20.V I then form arabbet inthe innerV lower corner of'the'head between'head jamb and hei-id casing as-already referred to and as best shown in Fig'- v -ure2.

.Y ThisFarrangement:pnuitsfazssrhblyrQthe side andV head jambs, the ajiplicationv of theY 'sider casings to the side jambs, and lastly-4 Tri `Foi-"securing the proper alignment of the Y My construction' alsof permits the applicaticnof the head casing to the parts of the window frame already Iassembled which Ycan bey slid directly downward into place, thus joining it with the tongues on the upper ends of the side casings and with the outer edge of the head casing. 1 Such a joint is not quite as good as a tongueand groove joint, but. a tongue and groove joint is not as necessary 'atltheftopiof wiiidowiranrejn as to the sides thereof or between the side casi-ugs andhead casing; i

It might also be noted lthatV this arrangeyment/entirely eliminates any secondary operations of cuttingof'f the ytongues of any members near any ofthe joints as is necessary in so many of the' present types of window frame Constructions. 1 v

l Y the usev of a; groove extendingthe full length in the 'lower'edge of the head casingwith which an upwardly extending tongue or a screen frame orf'storm sashlmay coact..

n; van be noaa' aa as atta'fso'fa'is shortof the end-s ofthe head` casing 18 as indicated at 31 sofas not Vto leave an unsightly opening at the ends of the head vcasing Vwhich might not 'inA allcases be 'covered withsiding, stuccoio'rvother wall coverings.

side jambs V12 withthe head j amb 14, I pref- Kerably formv afdadov 29 inthe undersurface ofthe head jamb 14 asbestsho-wn in Figure .4.

ing ofa narrow strip inserted between the outer edge of the jamband the inner surface of the casingrmember. 'i

Y In theconstruction I disclose, one 'of these joints.V hasbeen" 'entirely ,eliminatedr and the c `onethat is left Y,is atongueandgroove joint at 'the sides, of the* v vinddwv frame and '.,a rab-k beted construction at the head thereof.`

` When the jambsV extend tog-the casings as just describedit is necessaryto' applyl a blind stop to the inner 'facel ofthejamb.` This .is

usuallyzdone Vwith nails or screws... I providera more" secureV eans f rtheirapplilcation as will now bedescribed.'

" In connection lwithv the `window frame 'A I provide" side blind sto-ps132and 'ahead ,blindv stopfg34. "EachV blind 'stop 32Y is provided a dove-tailed tongue Y3G adapted to interfit withv a dove-tailed rabbet w38 ure The side casingl projectsslightly be- Y yond theforward edge ofthe sidejamb 12 atthe base Yof Ythe tongue 20 thereon .so as to form, inv conjunction with the frabbet 38, n

a dove-tailed groove to receive the, dovetailed tongueBGof the sideblind stop 82.

, By this construction the blind stop 32 is held much morerigidly after the side casing isn secured i'nposition on 4the sideamb'than whennails or screws only are used for securing the blind stop in position. Furthermore,

it is much harder to removethe blind stop and burglars are not so ready to tamper with the window' when provided with a` dovetailed blind Ysto-p `as illustrated, .inasmuch as .theside casings would have to be removed beforev the blind stops and window, sashes 40 could vbe removed.V

VThe dove-tailed connections Vbetwec-in'the jblindstops and .side j ambs areV particularly desir'able,.but at the head of the window it lsnot so necessary for the Vblind stop 34 to .have aswmuch rigidity as the side blindstops 82. Consequently, the blind stop 34'm'ayrbe rectangular in cross sectionKY andnailed in position, although` it may be similarly rab- .beted in position as illustrated in Figure 8.

Inl this figure the dove-,tailed tongue of the blind stop is indicated'at 36a and the dove- Atailed krabbet of .the Vhead jamb 14 is indicated by the reference numeral 38a. f It will be notedthat the head blindstop` is'v rab- `betted as indicated Vat 42 so as to make its outer face in alignment withl the outer-faces of thelside blind stops32. Y

ist

It will be noted that the head jamb 14 in this gure is provided with a rabbet 44 to Y interiit with the rabbet 30a of the head casing 18. This is Vjust another way of making ak joint at the top of the window frame which will allow downward motion of the head jamb in assembly.

Some changesmay be made in the construction and arrangement of the parts of my device, without departing from the real spirit and purpose of my invention, and it is my intention to cover by my claims, any modified forms of structure or use of mechanical equivalents, which may be reasonably included within their scope.

V I claim as my invention 1. A window frame construction comprising side and head jamb members and side and head easings, joints between said jamb members and said casings for weather proofing purposes, said joints being arranged as j follows for convenience in assembly; each of said side jamb members having a formed tongue and each of said side easings having a groove aligned and coacting therewith, said head casing being provided with a downwardly opening rabbet to coact with said head jamb member, the upper end of each of said side easings being provided with a tongue, the lower edge of said head casing being provided with a groovefor coaction therewith, the alignment of said last mentioned Igroove and of said rabbet being such as to permit simultaneous assembly of said r head casing with the tongue of the side casing and with the head jamb respectively by a single sliding motion downwardly in a plane parallel with the vertical plane of the side casing.

2. A window frame construction comprising side and head jamb members and side and head casings, joints'between said side casings and said head casing and between said head jamb and said Vhead casing for weather proofing purposes, said joints being arranged as follows for convenience in assembly; said head casingibeing provided with a downwardly opening rabbet to coact with said head jamb, thecupper end of each of said side casings being provided with a tongue, the lower edge of said head casing being provided with a groove for coaction therewith, the alignment of said groove and of said rabbet being such as to permit simulf taneous assembly of the head casing with the tongue of the side casing and with the head jamb respectively by a single motion downwardly in a plane parallel with the vertical plane of the side casings.

SERN MADSEN. 

